@article{Lawson2008,
author = {Lawson, D.W. and Mace, R.},
title= {Sibling configuration and childhood growth in contemporary British families},
year = {2008},
doi = {10.1093/ije/dyn11},
journal = {International Journal of Epidemiology, I},
volume = {37},
pages = {1408--1421},
}